Gas-pressure regulator



(No Model.)

.L. FRANCIS 8u J.' A. TIBBS.

GAS'PRBSSURB REGULATOR. Np; 295,532. Patented Mar. 25, 1884;

NA PErERs. Pimm nnnnn u. Winnings". n. c.

` diaphragm is provided with an opening, E,

supply-pipe.

- placed ina gas-pipe.

UNITED STATES PATENT OFFICE.

LEWIS G. FRANCIS, OF LA GRANGE, AND JOHN AA. TIBBS,

OF HINSDALE, v

ILLINOIS.

` GAS-.PRESSURE REGULATOR.

" SPECIFICATION forming part ofLetters Patent No. 295,532, dated March 25, 1884.

Application filed December 13. 1883. (No model.) y

To @ZZ whom t may concern,.-

Be it known that we, LEWIs G. FRANCIS and JOHN A. TIBBs, citizens of the United States, and residing at La Grange, Cook county, y

and Hinsdale, in the county of Du Page, and State of Illinois, have invented certain new and useful Improvements in Gas Pressure Regulators, which are fully set forth inthe following specification, reference being had to the accompanying drawings, in which- Figure l represents a vertical sectional view of our improved regulator; Fig. 2, a side view of the valve and valve-stem detached from the regulator. Fig. 3 is a transverse sectional view of the valve-stem, taken on the line y y, Fig. 2; and Fig. L.Lis atransverse sectional view taken on the linew as, Fig. l, looking down.

pressure of the gas serves to close avalve and shut off part of the gas-supply, and keep a uniform pressure at the burner, although the pressure from the supply varies.

Our invention consists in the special combinations and improvements hereinafter specied, whereby the parts which operate to close the valve and maintain a uniform pressure between the valve and burner are simplied, x and also made more sensitive to the operation y `"pressure of gas through the,"

of the varying In the accompanying drawings,`A repre,` sents a two-way joint that is designed to be The pipe is connected to this two-way joint at B, which we will call the inlet-pipe. The pipe leading to` tlie burners, which we will call thc outlet-pipe,77 is connected to it at C. The two-way joint A has a diaphragm, D, extending across it at the top of its enlarged bottom portion. The

which is enlarged at its bottom by a flaring "surface, F, to form a valve-seat.

G is a valve, and H a valvesteni. This substantially as the shape float K, but there are small openings M around the bottom of this tube, where it is joined to the case K, to admit o f the liquid in the iioat gradually flowing from the float K into the case J when the iioat is raised, as hereinafter described. V

N is a tube,which screws into the joint A, as shown, and can be screwed up or down, so as to extend higher or lowerinto the float K.

,The valve-stem H fits into this tube, and is Our invention relates to that class of gas- ,pressure regulators in which the increased held vertically in position by it.

O is a sensitive spiral spring, which rests on `the bottom of the case J, and extends up in the tube L to the top of the float K.

P is a screw threaded rod rigidly attached to the top of the hollow valve'stem H in such a manner as not to close the topof the hollow Valve-stem. This rod P extends up through the top of the float K.

Q is a nut that screws upon the top of this screwthreaded rod I?, and rests aga-inst the top of the oat K. This nut causes the valve G and valve-stem H to be suspended from the top of the float K.

R is a nut screwed upon the screw-threaded rod P, and has two short pins, r, projecting down from the under side of the nut, which serves as a stop to strike against the top of the adjustable tube N, and so as not to entirely close the openings in the top of the valve-stem H when the same is lowered below the top of the adjustable tube, and also regulates the distance which the valve G can open, and the tube N can be raised and lowered to give the valve G greater or less play, as'desired. The shaded lines in the oat K and case J indicate a liquid, preferably glyeerine; but we may use any liquid floating material for oating the float K in the ease J. The floating liquid carries nearly all of the weight of theiioat K and valve G and valve-stem H; but the coil-springl O takes a small portion of such weight and gives to the float steadiness when there is varying pressure to the gas.

ICO

a Y i y y 295,532

S is an opening in the top of the case J, to relieve any pressure that there might otherwise be in the top of the case above the iioat K.

The operation of oui` regulator is as follows: When it is placed in the gas-pipe, the supplypipe being attached at B and the outlet-pipe at C, the normal position of the valve G is the position shown in the drawings, the valve being open to the full size of the supply-pipe. To admit of this the joint A is made larger below the diaphragm D than the supply-pipe, which gives ample space for the gas to pass around the valve O. The gas passes through the diaphragm D into the hollow valve-stem H, and up into the top of the iioat K. rllhe float is so adjusted as not to be raised by the gas until a certain pressure is reached, that pressure being just .the pressure desired to supply the burners connected with the outletpipe C. When that pressure isexceeded, the float K is raised by the gas passing from the hollow stem H into the top of the ioat above the glycerine, andthe valve G is raised by the oat and vpartially closed, which shuts off a portion of the pressure and gives a pressure uniform and steady at the burner. The spring O assists the floating. material in holding the float K steady, and prevents a sudden movement of the float, which is liable to give to the flame at the burner aflickering or unsteadiness, which is very objectionable. When the iioat K is raised, the floating material in the iioat gradually runs out through the openings M, and when the iloat sinks again in the oating material it flows back through the openings M into the float gradually. This also tical movements, caused by the varying pressure of the gas in the float. The spherical shape of the float and case enables us to carry a larger quantity of the floating material in the float K, which is an advantage, and it also prevents any tendency to tip sidewise, whichy is the best iioating form to give to the float. It will be observed that we have but a very few parts in our regulator, and by making the valve-stem hollow we are able to have a detachable center tube, N, which serves simply as a support and guide for the operating parts. This makes our regulator very cheap and efficient.

Having fully described the construction and operation of our improvements, what we claim, and desire to secure by Letters Patent, is-

l. The combination, in a gas-pressure regulator, of the valve G, diaphragm D, provided with an opening, E, the hollow valve-stem H, provided with an opening, I, the float K, and case J, and mechanisms for guiding the valvestem, substantially as specified and shown.

y 2. In a gas-pressure regulator, the combination of the case J, iioat K, the tube L, and the spiral spring O, as specified and shown.

3. The combination, in a gas-pressure regulator,l of the adjustable tube N, the hollow valve-stem H, the ioat K, and case J, as speciiied and shown.

LEWIS G. FRANCIS. JOHNl A. TIBBS. Witnesses:

W. C. CoRLIEs, A. M. BEsT. 

